Abstract:Objective To investigate the effectiveness of neurophysiological monitoring in protecting neurological function during minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) surgery.Methods We prospectively enrolled 80 patients from the Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine between July 2021 and July 2023, and randomly divided them into the control group and the experimental group, with 40 cases in each group. The patients in the control group underwent standard general anesthesia with routine postoperative care and follow-up, while those in the experimental group received neurophysiological monitoring in addition to the standard protocol. All surgeries were performed by the same team, with intraoperative monitoring including motor evoked potential (MEP), somatosensory evoked potential (SEP), and electromyography (EMG). Perioperative indicators, and differences in JOA scores, lumbar lordosis angle, Cobb angle in the coronal plane, MEP, SEP, and EMG before and after the surgery were compared between the two groups.Results There was no difference in the perioperative indicators between the two groups (P > 0.05). The differences in JOA scores, lumbar lordosis angle, and Cobb angle in the coronal plane before and after the surgery were greater in the experimental group than in the control group (P < 0.05). The differences in the SEP amplitude of the posterior tibial nerve before and after the surgery were higher in the experimental group than those in the control group (P < 0.05). Additionally, the differences in mean power frequency and EMG parameters before and after the surgery were also greater in the experimental group compared with the control group (P < 0.05).Conclusions Neurophysiological monitoring effectively reduces the risk of impairment of neurological function following MIS-TLIF surgery. It is recommended to widely apply neurophysiological monitoring in similar surgeries to enhance neurological protection.